Kawasaki Ninja ZX-6R 2019 vs. Aprilia RS 660 2021

Kawasaki Ninja ZX-6R 2019

Kawasaki Ninja ZX-6R 2019

Aprilia RS 660 2021

Aprilia RS 660 2021

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Overview - Kawasaki Ninja ZX-6R 2019 vs Aprilia RS 660 2021

The Kawasaki Ninja ZX-6R 2019 and the Aprilia RS 660 2021 are both supersport motorcycles that offer thrilling performance and advanced features.

In terms of engine specifications, the Kawasaki Ninja ZX-6R 2019 is equipped with an in-line, 4-cylinder engine with a displacement of 636cc. It delivers a power output of 130 HP and a torque of 70.8 Nm. On the other hand, the Aprilia RS 660 2021 features a 2-cylinder engine with a displacement of 659cc. It produces a slightly lower power output of 100 HP and a torque of 67 Nm.

Both motorcycles have DOHC valve configurations with 4 valves per cylinder, ensuring efficient combustion and optimal performance. The Kawasaki Ninja ZX-6R 2019 has a compression ratio of 12.9, while the Aprilia RS 660 2021 boasts a higher compression ratio of 13.5.

In terms of suspension, both motorcycles feature upside-down telescopic forks at the front and swing arm suspension at the rear. The Kawasaki Ninja ZX-6R 2019 has a front fork diameter of 41mm, while the Aprilia RS 660 2021 shares the same diameter. Both motorcycles offer adjustable compression, preload, and rebound settings for a personalized riding experience. The rear suspension of the Kawasaki Ninja ZX-6R 2019 is equipped with a monoshock, while the Aprilia RS 660 2021 offers preload and rebound adjustment.

The chassis of both motorcycles is made of aluminum, providing a lightweight yet sturdy structure. The Kawasaki Ninja ZX-6R 2019 features a twin-tube, perimeter, extruded frame, while the Aprilia RS 660 2021 has a load-bearing engine frame. The rake angle of the Kawasaki Ninja ZX-6R 2019 is 66.5 degrees, while the Aprilia RS 660 2021 has a slightly lower rake angle of 65.9 degrees. The trail measurement of the Kawasaki Ninja ZX-6R 2019 is 101mm, whereas the Aprilia RS 660 2021 has a trail of 104.6mm.

Kawasaki Ninja ZX-6R 2019

Kawasaki Ninja ZX-6R 2019

Both motorcycles are equipped with double disk brakes at the front, providing excellent stopping power. The Kawasaki Ninja ZX-6R 2019 has a front brake diameter of 310mm, while the Aprilia RS 660 2021 features a larger front brake diameter of 320mm. Both motorcycles utilize radial brake technology for enhanced performance.

When it comes to advanced rider assistance systems, both motorcycles offer ABS, riding modes, and ride-by-wire technology. The Aprilia RS 660 2021 goes a step further and includes additional features such as launch control, a quickshifter, traction control, and anti-wheelie functionality.

In terms of dimensions and weights, the Kawasaki Ninja ZX-6R 2019 has a front tire width of 120mm and a rear tire width of 180mm, both with a diameter of 17 inches. The wheelbase measures 1400mm, and the seat height is 830mm. The fuel tank capacity is 17 liters. On the other hand, the Aprilia RS 660 2021 shares the same tire dimensions and wheel diameter. However, it has a slightly shorter wheelbase of 1370mm and a lower seat height of 820mm. The fuel tank capacity is slightly smaller at 15 liters.

Both motorcycles are equipped with LED headlights, providing excellent visibility and a modern aesthetic.

Aprilia RS 660 2021

Aprilia RS 660 2021

In terms of strengths, the Kawasaki Ninja ZX-6R 2019 offers a great engine with a balanced mix of revving and torque. It delivers a lively handling experience without sacrificing comfort. The responsive fork and adjustable chassis contribute to a dynamic riding experience.

The Aprilia RS 660 2021 boasts a powerful engine that provides exhilarating performance. It also features an extensive electronics package, including launch control, quickshifter, and traction control, enhancing the overall riding experience. The sporty chassis and low weight contribute to agile handling, while the sporty look adds to its appeal.

However, the Kawasaki Ninja ZX-6R 2019 has some weaknesses in terms of design details, such as the number plate holder and indicators, which could use more finesse. Additionally, some riders may find the overall silhouette of the motorcycle lacking in sportiness and aggressiveness.

The Aprilia RS 660 2021 has a minor weakness in terms of the rev counter, which may be poorly readable for some riders.

In conclusion, both the Kawasaki Ninja ZX-6R 2019 and the Aprilia RS 660 2021 are impressive supersport motorcycles with their own unique strengths and weaknesses. Riders looking for a well-rounded package with a great engine and responsive handling may prefer the Kawasaki Ninja ZX-6R 2019. On the other hand, those seeking a more powerful engine and advanced electronics package may lean towards the Aprilia RS 660 2021. Ultimately, the choice between the two will depend on individual preferences and priorities.

Technical Specifications Kawasaki Ninja ZX-6R 2019 compared to Aprilia RS 660 2021

Kawasaki Ninja ZX-6R 2019
Aprilia RS 660 2021

Engine and Drive Train

Engine typeEngine typeIn lineEngine typeIn line crankpin offset
BoreBore67 mmBore81 mm
StrokeStroke45.1 mmStroke63.93 mm
Engine powerEngine power130 HPEngine power100 HP
Rpm at Max. PowerRpm at Max. Power13,500 rpmRpm at Max. Power10,500 rpm
TorqueTorque70.8 NmTorque67 Nm
Rpm at TorqueRpm at Torque11,000 rpmRpm at Torque8,500 rpm
Compression RatioCompression Ratio12.9 Compression Ratio13.5
Fuel systemFuel systemInjectionFuel systemInjection
StarterStarterElectricStarterElectric
Clutch TypeClutch TypeMultiplate in oil-bathClutch TypeMultiplate in oil-bath, Antihopping
TransmissionTransmissionChainTransmissionChain
Transmission TypeTransmission TypeGearshiftTransmission TypeGearshift
Number of gearsNumber of gears6Number of gears6
CylindersCylinders4Cylinders2
StrokesStrokes4-StrokeStrokes4-Stroke
Valves per cylinderValves per cylinder4Valves per cylinder4
ValvesValvesDOHCValvesDOHC
CoolingCoolingliquidCoolingliquid
DisplacementDisplacement636 ccmDisplacement659 ccm

Suspension Front

Front suspensionFront suspensionUpside-Down telescopic forkFront suspensionUpside-Down telescopic fork
DiameterDiameter41 mmDiameter41 mm
TravelTravel120 mmTravel120 mm
AdjustmentAdjustmentCompression, Preload, ReboundAdjustmentCompression, Preload, Rebound

Suspension Rear

SuspensionSuspensionSwing armSuspensionSwing arm
Shock absorberShock absorberMonoshockShock absorberMonoshock
TravelTravel151 mmTravel130 mm
AdjustmentAdjustmentCompression, Preload, ReboundAdjustmentPreload, Rebound
MaterialMaterialAluminiumMaterialAluminium

Chassis

FrameFrameAluminiumFrameAluminium
Frame typeFrame typeTwin Tube, Perimeter, ExtrudedFrame typeLoad-bearing engine
RakeRake66.5 degreeRake65.9 degree
TrailTrail101 mmTrail104.6 mm

Brakes Front

TypeTypeDouble diskTypeDouble disk
DiameterDiameter310 mmDiameter320 mm
PistonPistonFour pistonsPistonFour pistons
TechnologyTechnologyradialTechnologyradial

Brakes Rear

TypeTypeDiscTypeDisc
DiameterDiameter220 mmDiameter220 mm
PistonPistonSingle pistonPistonDouble piston

Assistance Systems

Advanced Rider Assistance SystemsAdvanced Rider Assistance SystemsABS, Riding modes, Ride by Wire, Traction controlAdvanced Rider Assistance SystemsABS, Riding modes, Launch-Control, Ride by Wire, Quickshifter, Traction control, Anti-wheelie

Dimensions and Weights

Front tyre widthFront tyre width120 mmFront tyre width120 mm
Front tyre heightFront tyre height70 %Front tyre height70 %
Front tyre diameterFront tyre diameter17 inchFront tyre diameter17 inch
Rear tyre widthRear tyre width180 mmRear tyre width180 mm
Rear tyre heightRear tyre height55 %Rear tyre height55 %
Rear tyre diameterRear tyre diameter17 inchRear tyre diameter17 inch
LengthLength2,025 mmLength1,995 mm
WidthWidth710 mmWidth745 mm
WheelbaseWheelbase1,400 mmWheelbase1,370 mm
Seat HeightSeat Height830 mmSeat Height820 mm
Fuel Tank CapacityFuel Tank Capacity17 lFuel Tank Capacity15 l
License compliancyLicense compliancyALicense compliancyA

Equipment

EquipmentEquipmentLED-HeadlightsEquipmentLED-Headlights

Pros and Cons in comparison

Pros and Cons in comparison

Kawasaki Ninja ZX-6R 2019

Kawasaki Ninja ZX-6R 2019

The Kawasaki Ninja ZX-6R is a perfectly sized supersport motorbike. With its 130 hp, sporty but controlled riding is possible. The shorter gearing and the 36cc extra displacement ensure that you can be a bit lazier on the road. A worthy flag-waver for the 600cc supersport segment.

Great engine with a great mix of revving and torque

supersport pleasure with lively handling - but still no ascetic feeling in the saddle

well responsive fork and decent, adjustable chassis.

Some details could do with more finesse - number plate holder and indicators!

The overall silhouette is not sporty enough. The sporty bike could do with more aggressiveness.

Aprilia RS 660 2021

Aprilia RS 660 2021

In 2021, the Aprilia RS 660 can be seen as the last true 600cc supersport, because with its sporty seating position and high-quality chassis components, it hits the sweet spot between suitability for everyday use and trackday potential. Thanks to the comprehensive electronics package, nothing is left to be desired on the road or on the track - and you can't complain about the powerful two-cylinder anyway. A great package for all those for whom 200+ hp superbikes are too much for everyday use.

powerful engine

extensive electronics package

sporty chassis

nice sound

low weight

sporty look

poorly readable rev counter

Price Comparison Avarage Market Price Kawasaki Ninja ZX-6R vs Aprilia RS 660

There are a few key differences between a Kawasaki Ninja ZX-6R 2019 and a Aprilia RS 660 2021. In terms of price, the actual average price of a Kawasaki Ninja ZX-6R 2019 is about 55% higher. Compared to Aprilia RS 660 2021 there are less Kawasaki Ninja ZX-6R 2019 bikes available on the 1000PS.de Marketplace, specifically 4 compared to 16. It takes less time to sell a Aprilia RS 660 with 101 days compared to 160 days for the Kawasaki Ninja ZX-6R. Since model year 2005 1000PS.de editors have written 37 reviews for the Kawasaki Ninja ZX-6R and 14 reviews for the Aprilia RS 660 since model year 2020. The first review for the Kawasaki Ninja ZX-6R was published on 02/09/2002 and now has more than 5,800 views. This compares to more than 52,500 views for the first review on Aprilia RS 660 published on 05/11/2019.

Price Kawasaki Ninja ZX-6R

Model year
Current average market prices

Price Aprilia RS 660

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Current average market prices

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